Palo Alto Networks Staff Engineer Interview Questions and Answers

How will you architect the Search Suggestion page

Q1. How will you design architecture for the product?
Ans. 
I will design a scalable and modular architecture that meets the product requirements.
• Identify the key components and their interactions

• Consider scalability and performance requirements

• Use design patterns like MVC or microservices

• Ensure security and data privacy measures are in place

• Document the architecture for future reference
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Q2. How to identify the circles collided
Ans. 
To identify circles collided, check if the sum of their radii is greater than the distance between their centers.
• Calculate the distance between the centers of the two circles using the distance formula

• Add the radii of the two circles

• If the sum of the radii is greater than or equal to the distance between the centers, the circles have collided
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Memory Leaks and Threading

Q1. Explain knn algorithm
Ans. 
k-Nearest Neighbors algorithm is a non-parametric classification algorithm.
• k-NN algorithm is based on the principle of finding k-nearest neighbors to a given data point and classifying it based on the majority class of its neighbors.

• It is a lazy learning algorithm as it does not require any training data to build a model.

• The value of k is an important parameter in k-NN algorithm and can be determined using cross-valida...read more
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Q1. Questions on project
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Q1. Managerial round. I was asked questions on my challenges with the project
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Q1. Questions on basic java, data structures and frameworks
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Create a project using spring and hibernate

Q1. Salary negotiations
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Q1. React js and JavaScript core questions along with couple of coding questions
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Q1. Previous projects and JavaScript fundamentals
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Q1. Typical HR round questions and salary discussions
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Q1. JavaScript and react js programs
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Q1. Programs in js and react
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JavaScript (js) is a programming language commonly used for web development, while React is a JavaScript library for building user interfaces.
• JavaScript (js) is a versatile programming language used for both front-end and back-end development.

• React is a popular JavaScript library developed by Facebook for building interactive user interfaces.

• React allows for the creation of reusable UI components, making it easier to m...read more
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Q1. Project details
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Q1. Discuss with salary details
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Q1. Basic technical questions
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Q1. About projects and coding
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Q1. Hr round about background
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Q1. Java Basics, Design Patterns
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Java, problem solving